Expandable shelf



FIG. 1 is a perspective view of an expandable shelf, incorporating the new design;

FIG. 2 is a top plan of the expandable shelf of FIG. 1;

FIG. 3 is a front elevation of the expandable shelf of FIG. 1;

FIG. 4 is a bottom plan of the expandable shelf of FIG. 1;

FIG. 5 is a rear elevation of the expandable shelf of FIG. 1;

FIG. 6 is a left-side elevation of the expandable shelf of FIG. 1;

FIG. 7 is a right-side elevation of the expandable shelf of FIG. 1;

FIG. 8 is a partial cross-sectional view of a part of the expandable shelf of FIG. 1, showing the structure cut at line 8—8 only, without showing structure behind line 8—8 for clarity;

FIG. 9 is a partial cross-sectional view of a part of the expandable shelf of FIG. 1, showing the structure cut at line 9—9 only, without showing structure behind line 9—9, for clarity;

FIG. 10 is a perspective view of an alternative position of the expandable shelf of FIG. 1; and,

FIG. 11 is a top plan of a second embodiment of an expandable shelf, an expandable shelf of indeterminate length incorporating the new design. 

The ornamental design for an expandable shelf, as shown and described. 